Question

Activity - 3
Acceleration is the rate of change in velocity.
Physical quantities are classified into scalar quantities and vector quantities.
Quantities having only magnitude are called scalar quantities.
Quantities having both magnitude and direction are called vector quantities.
The velocity of a moving object changes from 20 m/s to 60 m/s in 10 s.
a) What is the initial velocity of the object?
b) What is the final velocity of the object?
c) What is the change in velocity of the object?
d) Calculate the acceleration of the object?​

Answer 1

Answer:

(a) initial veloicity,u=20m/s

(b)final velocity,v=60m/s

(c)change in velocity=final velocity-initial velocity

=60-20=40m/s

(d)acceleration,a=(v-u)/t=40/10=4meter per second square